Chemistry Quiz 21
1 / 50
Unit of heat in SI system is________________?
2 / 50
In a period the atomic radius ?
3 / 50
Measurement of the degree of polarity is___________________?
4 / 50
The melting points and boiling points upto meddle of 3d- series ____________________?
5 / 50
When 6d orbital is complete the entering electron goes into_________________?
6 / 50
Which one of the following is also known as tartaric acid ?
7 / 50
In primary alkyl halides the halogen atom is attached to a carbon which is further attached to how many carbon atoms__________________?
8 / 50
How many electrons are there in benzene to form delocalized electron cloud________________?
9 / 50
Which one of the following halogens is present in Teflon________________?
10 / 50
The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is___________?
11 / 50
Which of the following solids show anisotropy___________________?
12 / 50
Vander Waals forces are stronger in_______________?
13 / 50
Incomplete oxidation of methane in the limited supply of air forms ?
14 / 50
The volume occupied by 2.8 g of N2 at STP______________________?
15 / 50
Addition of 2% gypsum in cement________________?
16 / 50
The coloured glassy mass in borax bead test is due to the formation of___________________?
17 / 50
Space around nucleus where finding probability of electrons is maximum is called ____________________?
18 / 50
The molar mass of an organic acids is determined by____________?
19 / 50
Which one of the following is not a good leaving group ?
20 / 50
In the purification of portable water the coagulant used is_________________?
21 / 50
Isotopes differ in_________________?
22 / 50
In electrolytic solution conductance of electricity is due to _____________________?
23 / 50
On heating aldehydes with Fehlings solution we get a precipitate whose colour is_________________?
24 / 50
If a graph is plotted between temperature on x-axis and volume on y-axis for 1 mole of gas then we get straight line which cuts the temperature exis at________________?
25 / 50
Which one of the following alcohols will be formed when ethyl magnesium bromide reacts with acetone ?
26 / 50
Iodine is solid due to_________________?
27 / 50
The structure of H2O2 is_______?
28 / 50
FeSO4 forms brown ring with________________?
29 / 50
AgCl dissolved with conc (2?10-2) Ksp will be__________________?
30 / 50
Which of the following is not a use of silicon ?
31 / 50
The formula C6H5-CO-CH3 represents_______ ?
32 / 50
Gypsum is______?
33 / 50
Nitronium ion is___________________?
34 / 50
General formula of alkyne is______________?
35 / 50
When water freezes at 0?C its density decreases due to_______________?
36 / 50
The reciprocal of the coefficent of viscosity is called__________?
37 / 50
Sodium carbonate is produced by____________?
38 / 50
Who used the term Concentrationwindow to draw the arbitrary lines of demarcation
39 / 50
Which is the unit of (K) rate constant for zero order reaction ?
40 / 50
Polyester resins are the product of the reaction of__________________?
41 / 50
The number of ions produced by [Pt(NH3)]Cl2?
42 / 50
Ozone hole is substantial depletion of ozone in every year during__________________?
43 / 50
The sample of isotopes of an element which needs not to be vaporized in the vaporization chamer_________________?
44 / 50
Which of the following is not an ester_________________?
45 / 50
1 mole of electron has mass in microgram_________________?
46 / 50
Rate expression for ammonia synthesis is___________________?
47 / 50
The solution which distils over with change in composition________________?
48 / 50
Energy released or absorbed when electrons are added in atom is_________________?
49 / 50
A sample of an iron and oxygen ore has a mass of 35.8 grams. The iron in the compound has a mass of 27.9 grams. What is the percent iron in the ore?
50 / 50
In a molecule of carbon monoxide, what are the formal charges on the two atoms?
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